* MPEG2 transport stream (aka DVB) muxer
* Copyright (c) 2003 Fabrice Bellard
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/dict.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
+#include "libavutil/avassert.h"
#include "libavcodec/mpegvideo.h"
#include "avformat.h"
#include "internal.h"
int tsid;
int64_t first_pcr;
int mux_rate; ///< set to 1 when VBR
+ int pes_payload_size;
int transport_stream_id;
int original_network_id;
int pmt_start_pid;
int start_pid;
+ int m2ts_mode;
} MpegTSWrite;
+/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
+#define DEFAULT_PES_HEADER_FREQ 16
+#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
+
static const AVOption options[] = {
{ "mpegts_transport_stream_id", "Set transport_stream_id field.",
offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_service_id", "Set service_id field.",
offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT, {.dbl = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
- offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT, {.dbl = 0x1000 }, 0x1000, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM},
+ offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT, {.dbl = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM},
{ "mpegts_start_pid", "Set the first pid.",
offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT, {.dbl = 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM},
+ {"mpegts_m2ts_mode", "Enable m2ts mode.",
+ offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_INT, {.dbl = -1 },
+ -1,1, AV_OPT_FLAG_ENCODING_PARAM},
{ "muxrate", NULL, offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT, {1}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
+ { "pes_payload_size", "Minimum PES packet payload in bytes",
+ offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT, {DEFAULT_PES_PAYLOAD_SIZE}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM},
{ NULL },
};
tot_len = 3 + 5 + len + 4;
/* check if not too big */
if (tot_len > 1024)
- return -1;
+ return AVERROR_INVALIDDATA;
q = section;
*q++ = tid;
/*********************************************/
/* mpegts writer */
-#define DEFAULT_PROVIDER_NAME "Libav"
+#define DEFAULT_PROVIDER_NAME "FFmpeg"
#define DEFAULT_SERVICE_NAME "Service01"
-/* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
-#define DEFAULT_PES_HEADER_FREQ 16
-#define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
-
/* we retransmit the SI info at this rate */
#define SDT_RETRANS_TIME 500
#define PAT_RETRANS_TIME 100
int64_t payload_pts;
int64_t payload_dts;
int payload_flags;
- uint8_t payload[DEFAULT_PES_PAYLOAD_SIZE];
+ uint8_t *payload;
ADTSContext *adts;
} MpegTSWriteStream;
/* write optional descriptors here */
switch(st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
+ if(st->codec->codec_id==CODEC_ID_EAC3){
+ *q++=0x7a; // EAC3 descriptor see A038 DVB SI
+ *q++=1; // 1 byte, all flags sets to 0
+ *q++=0; // omit all fields...
+ }
+
if (lang) {
char *p;
char *next = lang->value;
return service;
}
+static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
+{
+ return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
+ ts->first_pcr;
+}
+
+static void mpegts_prefix_m2ts_header(AVFormatContext *s)
+{
+ MpegTSWrite *ts = s->priv_data;
+ if (ts->m2ts_mode) {
+ int64_t pcr = get_pcr(s->priv_data, s->pb);
+ uint32_t tp_extra_header = pcr % 0x3fffffff;
+ tp_extra_header = AV_RB32(&tp_extra_header);
+ avio_write(s->pb, (unsigned char *) &tp_extra_header,
+ sizeof(tp_extra_header));
+ }
+}
+
static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
{
AVFormatContext *ctx = s->opaque;
+ mpegts_prefix_m2ts_header(ctx);
avio_write(ctx->pb, packet, TS_PACKET_SIZE);
}
const char *provider_name;
int *pids;
+ // round up to a whole number of TS packets
+ ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
+
ts->tsid = ts->transport_stream_id;
ts->onid = ts->original_network_id;
/* allocate a single DVB service */
if (!ts_st)
goto fail;
st->priv_data = ts_st;
+ ts_st->payload = av_mallocz(ts->pes_payload_size);
+ if (!ts_st->payload)
+ goto fail;
ts_st->service = service;
/* MPEG pid values < 16 are reserved. Applications which set st->id in
* this range are assigned a calculated pid. */
st->codec->extradata_size > 0) {
ts_st->adts = av_mallocz(sizeof(*ts_st->adts));
if (!ts_st->adts)
- return AVERROR(ENOMEM);
+ goto fail;
if (ff_adts_decode_extradata(s, ts_st->adts, st->codec->extradata,
st->codec->extradata_size) < 0)
- return -1;
+ goto fail;
}
}
service->pcr_packet_period,
ts->sdt_packet_period, ts->pat_packet_period);
+ if (ts->m2ts_mode == -1) {
+ if (av_match_ext(s->filename, "m2ts")) {
+ ts->m2ts_mode = 1;
+ } else {
+ ts->m2ts_mode = 0;
+ }
+ }
+
avio_flush(s->pb);
return 0;
fail:
av_free(pids);
for(i = 0;i < s->nb_streams; i++) {
+ MpegTSWriteStream *ts_st;
st = s->streams[i];
+ ts_st = st->priv_data;
+ if (ts_st) {
+ av_freep(&ts_st->payload);
+ av_freep(&ts_st->adts);
+ }
av_freep(&st->priv_data);
}
- return -1;
+ return AVERROR(EINVAL);
}
/* send SDT, PAT and PMT tables regulary */
}
}
-static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
-{
- return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
- ts->first_pcr;
-}
-
static int write_pcr_bits(uint8_t *buf, int64_t pcr)
{
int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
*q++ = 0xff;
*q++ = 0x10;
memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
+ mpegts_prefix_m2ts_header(s);
avio_write(s->pb, buf, TS_PACKET_SIZE);
}
/* stuffing bytes */
memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
+ mpegts_prefix_m2ts_header(s);
avio_write(s->pb, buf, TS_PACKET_SIZE);
}
memcpy(buf + TS_PACKET_SIZE - len, payload, len);
payload += len;
payload_size -= len;
+ mpegts_prefix_m2ts_header(s);
avio_write(s->pb, buf, TS_PACKET_SIZE);
}
avio_flush(s->pb);
int size = pkt->size;
uint8_t *buf= pkt->data;
uint8_t *data= NULL;
+ MpegTSWrite *ts = s->priv_data;
MpegTSWriteStream *ts_st = st->priv_data;
const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE)*2;
int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE;
if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
av_log(s, AV_LOG_ERROR, "first pts value must set\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
ts_st->first_pts_check = 0;
if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001) {
av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
- "no startcode found, use -vbsf h264_mp4toannexb\n");
- return -1;
+ "no startcode found, use the h264_mp4toannexb bitstream filter\n");
+ return AVERROR_INVALIDDATA;
}
do {
if ((state & 0x1f) != 9) { // AUD NAL
data = av_malloc(pkt->size+6);
if (!data)
- return -1;
+ return AVERROR(ENOMEM);
memcpy(data+6, pkt->data, pkt->size);
AV_WB32(data, 0x00000001);
data[4] = 0x09;
}
} else if (st->codec->codec_id == CODEC_ID_AAC) {
if (pkt->size < 2)
- return -1;
+ return AVERROR_INVALIDDATA;
if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
ADTSContext *adts = ts_st->adts;
int new_size, err;
if (!adts) {
- av_log(s, AV_LOG_ERROR, "aac bitstream not in adts format "
+ av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
"and extradata missing\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
new_size = ADTS_HEADER_SIZE+adts->pce_size+pkt->size;
if ((unsigned)new_size >= INT_MAX)
- return -1;
+ return AVERROR_INVALIDDATA;
data = av_malloc(new_size);
if (!data)
return AVERROR(ENOMEM);
}
}
- if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
- // for video and subtitle, write a single pes packet
- mpegts_write_pes(s, st, buf, size, pts, dts, pkt->flags & AV_PKT_FLAG_KEY);
- av_free(data);
- return 0;
- }
-
- if (ts_st->payload_size + size > DEFAULT_PES_PAYLOAD_SIZE) {
+ if (ts_st->payload_size && ts_st->payload_size + size > ts->pes_payload_size) {
mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
ts_st->payload_pts, ts_st->payload_dts,
ts_st->payload_flags & AV_PKT_FLAG_KEY);
ts_st->payload_size = 0;
}
+ if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
+ av_assert0(!ts_st->payload_size);
+ // for video and subtitle, write a single pes packet
+ mpegts_write_pes(s, st, buf, size, pts, dts, pkt->flags & AV_PKT_FLAG_KEY);
+ av_free(data);
+ return 0;
+ }
+
if (!ts_st->payload_size) {
ts_st->payload_pts = pts;
ts_st->payload_dts = dts;
ts_st->payload_pts, ts_st->payload_dts,
ts_st->payload_flags & AV_PKT_FLAG_KEY);
}
+ av_freep(&ts_st->payload);
av_freep(&ts_st->adts);
}
avio_flush(s->pb);
.name = "mpegts",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),
.mime_type = "video/x-mpegts",
- .extensions = "ts,m2t",
+ .extensions = "ts,m2t,m2ts,mts",
.priv_data_size = sizeof(MpegTSWrite),
.audio_codec = CODEC_ID_MP2,
.video_codec = CODEC_ID_MPEG2VIDEO,
projects / ffmpeg / blobdiff